Why your smartwatch thinks you slept badly even when you feel fine ...

Like many Americans, I know I need more sleep. I'm a night owl, often writing late into the night, but also a mom who gets up early with her kids. The result: I'm not getting enough rest.

Forger takes a more favorable view toward the devices, which he says help keep the overlooked importance of sleep front of mind. He recommends them even for people without significant sleep issues, ...